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B Potential energy Reaction Reaction coordinate coordinate C D otential -nergy Potential energy h Reaction coordinate Reaction coordinate n diagrams correspond with a two-step mechanism? diagrams correspond with a ono otop Potential energy

B Potential energy Reaction Reaction coordinate coordinate C D otential -nergy Potential energy h Reaction coordinate Reaction coordinate n diagrams correspond with a two-step mechanism? diagrams correspond with a ono otop Potential energy

Chemistry
Chemistry
10th Edition
ISBN:9781305957404
Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Chapter1: Chemical Foundations
Section: Chapter Questions
Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...
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### Energy Diagrams Analysis #### Consider the following four energy diagrams: **Energy Diagrams:** - **Diagram A:** A simple curve that rises to a peak and then falls back down. - **Diagram B:** A curve with two peaks, indicating two distinct steps. - **Diagram C:** Similar to Diagram A but with a different peak height. - **Diagram D:** A curve with multiple peaks and valleys, suggesting a more complex mechanism. #### Questions for Analysis: 1. **Which diagrams correspond with a two-step mechanism?** Two-step mechanisms are indicated by diagrams with two distinct peaks. Therefore: - Diagram B 2. **Which diagrams correspond with a one-step mechanism?** One-step mechanisms are indicated by diagrams with a single peak. Therefore: - Diagrams A and C 3. **Compare energy diagrams A and C. Which has a relatively larger Ea?** - Diagram C has a higher peak than Diagram A, indicating a larger activation energy (Ea). 4. **Compare diagrams A and C. Which has a negative ΔG?** - Diagram C ends lower than it starts, indicating a negative ΔG. 5. **Compare diagrams A and D. Which has a positive ΔG?** - Diagram D ends higher than it starts, indicating a positive ΔG. 6. **Compare all four energy diagrams. Which one exhibits the largest Ea?** - Diagram C exhibits the largest activation energy (Ea) as it has the highest peak. 7. **Which processes will have a value of Keq that is greater than 1?** Processes with Keq greater than 1 will have a negative ΔG, meaning products are lower in energy than reactants. Therefore: - Diagram C 8. **Which process will have a value of Keq that is roughly equal to 1?** A process with Keq roughly equal to 1 will have products and reactants at almost the same energy level. Therefore: - Diagram A
Transcribed Image Text:### Energy Diagrams Analysis #### Consider the following four energy diagrams: **Energy Diagrams:** - **Diagram A:** A simple curve that rises to a peak and then falls back down. - **Diagram B:** A curve with two peaks, indicating two distinct steps. - **Diagram C:** Similar to Diagram A but with a different peak height. - **Diagram D:** A curve with multiple peaks and valleys, suggesting a more complex mechanism. #### Questions for Analysis: 1. **Which diagrams correspond with a two-step mechanism?** Two-step mechanisms are indicated by diagrams with two distinct peaks. Therefore: - Diagram B 2. **Which diagrams correspond with a one-step mechanism?** One-step mechanisms are indicated by diagrams with a single peak. Therefore: - Diagrams A and C 3. **Compare energy diagrams A and C. Which has a relatively larger Ea?** - Diagram C has a higher peak than Diagram A, indicating a larger activation energy (Ea). 4. **Compare diagrams A and C. Which has a negative ΔG?** - Diagram C ends lower than it starts, indicating a negative ΔG. 5. **Compare diagrams A and D. Which has a positive ΔG?** - Diagram D ends higher than it starts, indicating a positive ΔG. 6. **Compare all four energy diagrams. Which one exhibits the largest Ea?** - Diagram C exhibits the largest activation energy (Ea) as it has the highest peak. 7. **Which processes will have a value of Keq that is greater than 1?** Processes with Keq greater than 1 will have a negative ΔG, meaning products are lower in energy than reactants. Therefore: - Diagram C 8. **Which process will have a value of Keq that is roughly equal to 1?** A process with Keq roughly equal to 1 will have products and reactants at almost the same energy level. Therefore: - Diagram A
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